<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="课程名称" prop="name">
        <el-input
          v-model="queryParams.name"
          placeholder="请输入课程名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="学分" prop="credit">
        <el-input
          v-model="queryParams.credit"
          placeholder="请输入学分"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="学年" prop="year">
        <el-input
          v-model="queryParams.year"
          placeholder="请输入学年"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="学期" prop="semester">
        <el-input
          v-model="queryParams.semester"
          placeholder="请输入学期"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
  
      <el-form-item label="专业名称" prop="deptName">
        <el-input
          v-model="queryParams.deptName"
          placeholder="请输入专业名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
  

      <el-form-item label="学院名称" prop="collegeName">
        <el-input
          v-model="queryParams.collegeName"
          placeholder="请输入学院名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['edu:course:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['edu:course:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['edu:course:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['edu:course:export']"
        >导出</el-button>
      </el-col>
      <el-col :span="1.5">
            <el-button
              type="info"
              plain
              icon="el-icon-upload2"
              size="mini"
              @click="handleImport">导入</el-button>
        </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="courseList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="课程名称" align="center" prop="name" />
      <el-table-column label="课程类型" align="center" prop="courseType" />
      <el-table-column label="学分" align="center" prop="credit" />
      <el-table-column label="学年" align="center" prop="year" />
      <el-table-column label="学期" align="center" prop="semester" />
      <el-table-column label="备注" align="center" prop="remark" />
      <el-table-column label="专业名称" align="center" prop="deptName" />
      <el-table-column label="学院名称" align="center" prop="collegeName" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['edu:course:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['edu:course:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改课程对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="专业名称" prop="deptname">
        <treeselect v-model="form.deptId" :options="deptOptions"    :show-count="true" placeholder="请选择归属专业" />
        </el-form-item>
        <el-form-item label="课程名称" prop="name">
          <el-input v-model="form.name" placeholder="请输入课程名称" />
        </el-form-item>
        <el-form-item label="学分" prop="credit">
          <el-input v-model="form.credit" placeholder="请输入学分" />
        </el-form-item>
        
        <el-form-item label="是否必修" prop="credit">
          <el-radio v-model="form.courseType" label='必修'>必修</el-radio>
          <el-radio v-model="form.courseType" label='选修'>选修</el-radio>
        </el-form-item>
     
        <el-form-item label="年级" prop="year">
          <!-- <el-input v-model="form.year" placeholder="请输入年级" /> -->

          <el-select v-model="form.year" placeholder="请选择年级">  
            <el-option  
              v-for="dict in yearList"
              :key="dict"
              :label="dict"
              :value="dict"
            ></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="学期" prop="semester" >
          <el-select v-model="form.semester" placeholder="请选择学期">  
          <el-option  
              v-for="dict in semesterList"
              :key="dict"
              :label="dict"
              :value="dict"
            ></el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="备注" prop="remark">
          <el-input v-model="form.remark" type="textarea" placeholder="请输入内容" />
        </el-form-item>
        
          <!-- <el-input v-model="form.deptName" placeholder="请输入专业名称" /> -->
          <!-- <el-select v-model="form.deptName" placeholder="请输入专业名称">
            <el-option
              v-for="dict in deptOptions"
              :key="dict.classId"
              :label="dict.deptName"
              :value="dict.deptName"
            ></el-option>
          </el-select> -->
          
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

     <!-- 导入对话框 -->
     <el-dialog :title="importUpload.title" :visible.sync="importUpload.open" width="400px" append-to-body>
      <el-upload
        ref="importUpload"
        :limit="1"
        accept=".xlsx, .xls"
        :headers="importUpload.headers"
        :action="importUpload.url + '?updateSupport=' + importUpload.updateSupport"
        :disabled="importUpload.isUploading"
        :on-progress="handleFileUploadProgress"
        :on-success="handleFileSuccess"
        :auto-upload="false"
        drag
      >
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
        <div class="el-upload__tip text-center" slot="tip">
          <!-- <div class="el-upload__tip" slot="tip">
            <el-checkbox v-model="importUpload.updateSupport" /> 是否更新已经存在的用户数据
          </div> -->
          <span>仅允许导入xls、xlsx格式文件。</span>
          <el-link type="primary" :underline="false" style="font-size:12px;vertical-align: baseline;" @click="importTemplate">下载模板</el-link>
        </div>
      </el-upload>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitFileForm">确 定</el-button>
        <el-button @click="upload.open = false">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listCourse, getCourse, delCourse, addCourse, updateCourse } from "@/api/edu/course";
import { deptTreeSelect } from "@/api/system/user";
import Treeselect from "@riophae/vue-treeselect";
import "@riophae/vue-treeselect/dist/vue-treeselect.css";
import { getToken } from "@/utils/auth";
export default {
  name: "Course",
  components: { Treeselect },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      time: [],
      //年份最近
      currentTime: new Date().getFullYear(),
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 课程表格数据
      courseList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      yearList:[], //年份列表
      semesterList:[1,2],
      year:null, //当前年份
      semester:null, //当前学期
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        name: null,
        courseType: null,
        credit: null,
        year: null,
        semester: null,
        deptId: null,
        deptName: null,
        collegeId: null,
        collegeName: null
      },
      // 表单参数
      form: {},
      deptOptions:[],
      // 表单校验
      rules: {
        updateTime: [
          { required: true, message: "更新时间不能为空", trigger: "blur" }
        ],
      },
      importUpload: {
        // 是否显示弹出层（用户导入）
        open: false,
        // 弹出层标题（用户导入）
        title: "",
        // 是否禁用上传
        isUploading: false,
        // 是否更新已经存在的用户数据
        updateSupport: 0,
        // 设置上传的请求头部
        headers: { Authorization: "Bearer " + getToken() },
        // 上传的地址
        url: process.env.VUE_APP_BASE_API + "/edu/course/importData"
      },
    };
  },
  created() {
    this.getList();
    this.getDeptTree();
    this.getCurrentYear()
  },
  methods: {
     /**
     * 导入
     */
    // 提交上传文件
    submitFileForm() {
      this.$refs.importUpload.submit();
    },
    /** 下载模板操作 */
    importTemplate() {
      this.download('edu/course/importTemplate', {
      }, `班级_${new Date().getTime()}.xlsx`)
    },
    // 文件上传中处理
    handleFileUploadProgress(event, file, fileList) {
      this.importUpload.isUploading = true;
    },
    handleFileSuccess(response, file, fileList) {
      this.importUpload.open = false;
      this.importUpload.isUploading = false;
      this.$refs.importUpload.clearFiles();
      this.$alert("<div style='overflow: auto;overflow-x: hidden;max-height: 70vh;padding: 10px 20px 0;'>" + response.msg + "</div>", "导入结果", { dangerouslyUseHTMLString: true });
      this.getList();
    },
    handleImport(){
      this.importUpload.open = true;
    },
    /** 查询课程列表 */
    getList() {
      this.loading = true;
      listCourse(this.queryParams).then(response => {
        this.courseList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
     //获取当前的年份和学期
     getCurrentYear () {
      this.getConfigKey("edu.current.year.semester").then(response => {
        console.log(response)
        let yearSemester = response.msg
        let yearSemesterArr = yearSemester.split("-")
        this.year = Number(yearSemesterArr[0]);
        this.semester = Number(yearSemesterArr[1]);
      });
    },
    // 获取年份下拉框
    getYearList () {
      console.log(this.year)
      if (!this.yearList || this.yearList.length != []) {
        return;
      }
      let year = this.year
      for (var i = year - 3; i < year + 4; i++) {
        this.yearList.push(i)
      }
           
    },
    getDeptTree() {
      deptTreeSelect().then(response => {
        this.deptOptions = response.data;
      });
    },

    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        courseId: null,
        name: null,
        courseType: null,
        credit: null,
        year: null,
        semester: null,
        delFlag: null,
        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null,
        remark: null,
        deptId: null,
        deptName: null,
        collegeId: null,
        collegeName: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.courseId)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加课程";
      this.getYearList()
      this.form.year = this.year
      this.form.semester= this.semester
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const courseId = row.courseId || this.ids
      getCourse(courseId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改课程";
        this.getYearList()
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.courseId != null) {
            updateCourse(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addCourse(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const courseIds = row.courseId || this.ids;
      this.$modal.confirm('是否确认删除课程为"' + courseIds + '"的数据项？').then(function() {
        return delCourse(courseIds);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('edu/course/export', {
        ...this.queryParams
      }, `course_${new Date().getTime()}.xlsx`)
    },
    // 获取时间 
   generateYears() {
      const currentYear = new Date().getFullYear();
      for (let i = -4; i <= 0; i++) {
        this.time.push(currentYear + i);
      }
    },
  }
};
</script>
